/**
 * Copyright © 2008, EMC Corporation.
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 *
 *     + Redistributions of source code must retain the above copyright notice, 
 *       this list of conditions and the following disclaimer.
 *     + Redistributions in binary form must reproduce the above copyright 
 *       notice, this list of conditions and the following disclaimer in the 
 *       documentation and/or other materials provided with the distribution.
 *     + The name of EMC Corporation may not be used to endorse or promote 
 *       products derived from this software without specific prior written 
 *       permission.
 *
 *      THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 *      "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 
 *      TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 *      PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 
 *      BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 *      CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 *      SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
 *      INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 *      CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 *      ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 *      POSSIBILITY OF SUCH DAMAGE.
 */
package com.emc.esu.api {
	/**
	 * Used to grant a permission to a grantee (a user or group)
	 */
	public class Grant {
    	private var grantee:Grantee;
	    private var permission:String;
	    
	
	    /**
	     * Creates a new grant
	     * @param grantee the recipient of the permission
	     * @param permission the rights to grant to the grantee.  Use
	     * the constants in the Permission class.
	     */
	    public function Grant( grantee:Grantee, permission:String ) { 
	        this.grantee = grantee;
	        this.permission = permission;
	    }
	    
	    /**
	     * Gets the recipient of the grant
	     * @return the grantee
	     */
	    public function getGrantee():Grantee {
	        return grantee;
	    }
	    
	    /**
	     * Gets the rights assigned the grantee
	     * @return the permissions assigned
	     */
	    public function getPermission():String {
	        return permission;
	    }
	        
	    /**
	     * Returns the grant in string form: grantee=permission
	     */
	    public function toString():String {
	        return grantee.getName() + "=" + permission;
	    }
	    
	    /**
	     * Checks to see if grants are equal.  This is true if the grantee and
	     * permission are equal.
	     */
	    public function equals( obj:Object ):Boolean {
	        if( !(obj is Grant ) ) {
	            return false;
	        }
	        var g:Grant = Grant(obj);
	        return g.permission == permission && g.grantee.equals( grantee );
	    }


	}
}